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Number 30 marks the part’s position in this exploded view (Audi A5 Limousine (2024-2025)).

Other diagrams in the gallery may use a different number for the same part.

Product overview

Genuine OEM Audi Reservoir, part number 8B3121405H. Fits Audi A5 Avant (2024-2025), Audi A5 Limousine (2024-2025). Shown as position 30 in the engine diagram 8WK12114. Equipment code: 0K4.

Catalogue entry: CONTAINER.

Technical details

Category
Engine Cooling
Diagram sheet
Audi 8wk121090, position 30
ETKA group
1 / 21 (121)
Manufacturer
Audi
Product Type
Genuine new auto parts

Specifications

As recorded in the manufacturer’s parts catalogue for this part number.

Equipment codes

  • 0K4

PR codes identify the factory option a part belongs to; your vehicle’s are listed on the data sticker in the boot well or service booklet.

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Parts diagram & fitment

2 vehicles

Reservoir — locate 8B3121405H Audi Reservoir in the official exploded view and explore the surrounding assembly.

Parts in this assembly16
Vehicle fitment table2

Europe (2)

VehicleYearsPos.QtyPR
Audi A5 Limo 2.02024-3010K4
Audi A5 Avant 2.02024-3010K4

The manufacturer’s catalogue lists this part number as fitted until 7 July 2025; later builds may use a superseding number.

Diagrams & fitment data powered by oemdiagrams.com

8B3121405H Audi Reservoir is fitted on: Audi A5 Limo 2.0 2024-; Audi A5 Avant 2.0 2024-.